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| TIBOOBURRA, A NEW AUSTRALIAN METEORITE FIND, AND OTHER CARBONACEOUS CHONDRITES OF HIGH PETROLOGIC GRADE...University ofAdelaide G.P.O. Box 498. Adelaide, South Australia. 5001 A.L.Jaques Bureau ofMineral Resources...Tibooburra, a new meteoritefindfrom western New South Wales, belongs to the Yigarano subgroup ofthe carbonaceous...Petrological evidence suggests that. like the Allende meteorite. Tibooburra is a CV3 chondrite which has experienced...several other CV chondrites, such as Coolidge and Karoonda, which have been strongly metamorphosed. This |
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| THE ADELAIDE METEORITE R. Davy* and S.G. Whitehead Australian Mineral Development Laboratories (A mdel)...Frewville, South Australia 5063 G. Pitt Department ofMines Greenhill Road, Eastwood, South Australia 5063...analysis of the newlydiscovered Adelaide meteorite is given. This meteorite is a C2 chondrite with C3 affinities...affinities. However, the meteorite is unlike both C2 and C3 chondrites in having a CalAI ratio of 0.47. The...closer to the Vigarno than the Ornans subtype. The meteorite is unusual in that it contains primary magnetite |
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| valid for the hIghI> metamorphosed CV5 chondrite Karoonda. Furthermore. it is observed that the Zr;HFratios...exception of a CV4 cholidritc, of which only one meteorite is known, representatives of all known petrologic...analyzed standard samples. Also, the results of meteorite determined in the present study arc compared the...devrohons ,!!,,,rfrn loo Fig. 1. The Allende meteorite: a comparison of present data with literature... 2. Weight Orgueil Type CIl concentrations Murray of 20 trace Murchison CM2 CM2 elements Allende |
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| responsible for these variations. The Mo content of Karoonda is nearly a factor of four lower than that of...grains of Ca, Al-rich inclusions from the Allende meteorite [1]. In some of these inclusions molybdenite (MoS2)...extraction method. 200-400 mg of powdered meteorite or of meteorite chips were activated at a neutron flux...are variable, even in different samples of one meteorite, it is better to compare ratios among refractory...by variations within different samples of one meteorite. Kiesl and Hecht [14] also report data on Ir. |
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| 1219 Table 1. Sample sources and descriptions Meteorite Abbrev. Recovery Form Alais ALAIS fall ...from Yittlefehldt and Wetherill, 1979 Mn-ray MURRAY fall chips SI light gray exterior. interior...NaturelIe. Paris; Institution. Washington; NMWMIVG-Meteorite Working Group, Houston; SI-Smithsonian Naturhistoriches...finds Yamato 74662 and Allan Hills .477306. and Murray, for which some stones were recovered weeks or...mean CI points. Two CM chondrites. A77306tAI and Murray (MI. fall significantly apart the other group members |
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| Ornans. Land. lsna. Warrenton. Assignment of Karoonda to the Ornans subtype is uncertain, but it is...metamorphism, but the effects are small. The meteorite Ornans presents an intriguing paradox. Observed...suggests these may be the most abundant of all meteorite types in the asteroid belt (CHAPMAN. 1976). Four...chondrite. Karoonda. appears to have properties of both the Ornans and Vigarano subtypes. Karoonda was unclassified...the C3(0) group by CLARKEer nl. (19701. This meteorite has been examined in the present study to determine |
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| analyzing a thin section of the NWA 6604 CK4 meteorite, only altered chondrules and various components...possible case models should be considered for this meteorite: alteration by purely impact-driven processes...type carbonaceous chondrite is presented. This meteorite was purchased at a market in Morocco as a 605...7.5 (9–29). As the petrological type of this meteorite specimen is 4, it suffered a low level of alteration...carbonaceous chondrites, named after the Karoonda meteorite. They are metamorphosed to type 4 with temperatures |
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| alteredcomposition. Udei Station appearsto be a IAB meteorite even though its FeO/(FeO + MgO) ratio is slightly...slightly above the IAB tield. The highly weathered meteorite Tierra Blanca is closely related to IAB but has...of an incomplete sam- signed to the IAB iron meteorite group, its silicate inclusions are more oxidized...rs?ncobbin CumberlandPalls (chon) enon Krkmgari Karoonda LOdIM Nstschaevo ImnaIIO Suwahib (Bmak) Ticrre...(1977) (201 Nmon and N&en (19681 sizes. The meteorite is heavily weathered and contains veins of hematite/limonite |
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| well as some E- and M-types perhaps matching enstatite-bearing meteorites and irons. Perhaps these differentiated(...carbonaceous meteorites, ordinary chondrites, enstatite chondrites and achondrites, reduced irons, forsterite-bearing...Meteorites Carbonaceous chondrites Ordinary chondrites Enstatite chondrites and achondrites: reduced irons For...' In spite of numerous historical records of meteorite falls, a century of scientific scepticism about...the planeto-prete. Melting curves for Fe and enstatite (fig. 2) may pertain to the differentiation of |
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| solar nebula and later secondary processes on meteorite parent bodies (Brearley [2003]; Scott and Krot...processes occur on the meteorite parent body or on the Earth’s surface in the case of meteorite “finds.” Comprehensive...CAIs, chondrules, and matrix from the Allende meteorite and concluded that the HSE variation in CAIs is...in the acidresistant residue of the Murchison meteorite, which they interpreted as direct nebular condensates...calibrated using the Smithsonian Institution Allende meteorite standard reference powder (USNM 3529, spilt 18 |
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| cover Barred olivine chondrule from the Allende meteorite, in transmitted light. The chondrule is surrounded.... . . . . . . . . . . 8.1 Hyde Park, South Chicago . . . . . . . . . . . . . ...wiegen, zu zersetzen, was der Außenwelt angehört. (Meteorite stones provide us with the only possibility of...I retired from the university and joined the meteorite group at the Senckenberg Research Institute in...first ultra-refractory inclusion in the Ornans meteorite. GEOCHEMICAL PERSPECTIVES | H E R B E R T PA |
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| 4f secondary ion mass spectrometer. For each meteorite, five to fifteen particles ofabout 30-50 ~m in...terrestrial olivine samples and most data of the meteorite samples plotted near the normal mass fractionation...heavy nitrogen (1, 2). Stepped combustion of the meteorite shows that the release profile of the carbon and...period comets. PIXE measurements on the iron meteorite Mundrabilla. S. Bajt' and K. L. Rasmussen.' 'Max...1- 1500 020406080 o 20 40 60 SOwn iron meteorite Mundrabilla (Bajt et al., 1990). Absolute calibration |
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| Meteorites, Ice, and Antarctica Bill Cassidy led meteorite recovery expeditions in the Antarctic for 15 years...searches resulted in the collection of thousands of meteorite specimens from the ice. This fascinating story...and speculating on its significance 227 10 Meteorite stranding surfaces and the ice sheet 274 11...(Antarctic Search for Meteorites) program of meteorite collection in Antarctica and its importance for... The subsequent discovery of several hundred meteorite samples by another Japanese team proved the point |
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| sharp, but irregular interfaces with the host meteorite and have characteristics which suggest that formed...from hot deserts. The 26AI concentration in a meteorite depends upon different parameter like the exposure...analyzed sample and the terrestrial age of the meteorite. Our data contributes to the understanding of...production rate characteristic for the corresponding meteorite class. We do not find extremely low 26AI concentrations...order to reconstruct the irradiation history of a meteorite in detail, it is essential to analyze other cosmogenic |
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| Science Tunis, Tunisia, 4 Meteorite Laboratory Lehmweg Gifhorn, Germany, 5 Meteorite Recon Mühlendamm Hamburg...calculation of meteorite flux is possible [4]. Following previous estimation of meteorite flux based on...structures in the alluvial fan, or the result of a meteorite shower. Their age, whatever the event is, is very...ANALYSIS (INAA) FOR ELEMENTAL COMPOSITION OF FRESH METEORITE FALL IN ORISSA, INDIA (2003). B. Adur, H.B. Mali...there were rains of the meteorite shower. Results: - A sample of the meteorite which fell in Purva Suniti |
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| Geological Sciences University of Cape Town Rondebosch, South Africa ISSN 2510-1307 ISSN 2510-1315 (electronic)...Mouginis-Mark (Honolulu), Andrea Murphy (Adelaide, Australia), Martin Pfleghaar (Heidelberg), Cornelia Schmitt-Riegraf...Seckendorff (Würzburg), Denis Smith (Adelaide, Australia), Wilhelm Stürmer (Erlangen), Ekkehart Tillmanns...fourfold rotary inversion axis in c. Example: the meteorite mineral schreibersite (Fe,Ni)3P. 5 4/m, tetr.-dipyramidal:...examples, found in the Pilbara Craton of Western Australia, have been dated at about 3.43 billion years (3 |
